// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

package task

import (
	"context"
	"fmt"

	"github.com/kumose/errors"
	"github.com/kumose/kmopt/pkg/cluster/ctxt"
)

// CopyFile will copy a local file to the target host
type CopyFile struct {
	src      string
	dst      string
	remote   string
	download bool
	limit    int
	compress bool
}

// Execute implements the Task interface
func (c *CopyFile) Execute(ctx context.Context) error {
	e, ok := ctxt.GetInner(ctx).GetExecutor(c.remote)
	if !ok {
		return ErrNoExecutor
	}

	err := e.Transfer(ctx, c.src, c.dst, c.download, c.limit, c.compress)
	if err != nil {
		return errors.Annotate(err, "failed to transfer file")
	}

	return nil
}

// Rollback implements the Task interface
func (c *CopyFile) Rollback(ctx context.Context) error {
	return ErrUnsupportedRollback
}

// String implements the fmt.Stringer interface
func (c *CopyFile) String() string {
	if c.download {
		return fmt.Sprintf("CopyFile: remote=%s:%s, local=%s", c.remote, c.src, c.dst)
	}
	return fmt.Sprintf("CopyFile: local=%s, remote=%s:%s", c.src, c.remote, c.dst)
}
